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gymnosperm
[ jim-nuh-spurm ]
noun
- a vascular plant having seeds that are not enclosed in an ovary; a conifer or cycad.
gymnosperm
/ ˈdʒɪmnəʊˌspɜːm; ˈɡɪm- /
noun
- any seed-bearing plant in which the ovules are borne naked on the surface of the megasporophylls, which are often arranged in cones. Gymnosperms, which include conifers and cycads, are traditionally classified in the division Gymnospermae but in modern classifications are split into separate phyla Compare angiosperm
gymnosperm
/ ĭ′ə-û′ /
- Any of a group of seed-bearing plants whose ovules are not enclosed in an ovary, but are exposed on the surface of sporophylls or similar structures. Each ovule may contain several eggs, all of which may be fertilized and start to develop in a process known as polyembryony. In most seeds, however, only a single embryo survives. The reproductive structures of many gymnosperms are arranged in cones. The gymnosperms do not form a distinct monophyletic grouping, but simply include all the seed-bearing plants that are not angiosperms. In addition to several extinct groups, there are four very diverse living gymnosperm phyla: the conifers, the cycads, the ginkgo (surviving in a single species), and the gnetophytes.
- Compare angiospermSee more at seed-bearing plant
Derived Forms
- ˌ⳾Դˈdzܲ, adjective
Other yvlog Forms
- ⳾n·i noun
yvlog History and Origins
Origin of gymnosperm1
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How does gymnosperm compare to similar and commonly confused words? Explore the most common comparisons:
Example Sentences
They reproduce via seeds, as do the evolutionarily older gymnosperms, which include pine trees, ginkgoes, and others.
Other plants, including conifers, ferns and algae, are known as gymnosperms.
Other amber specimens from the same ancient forest show pollen from an older group of trees, the gymnosperms—conifers and gingkoes—which today are pollinated largely by wind.
Edward collected the state’s angiosperms and gymnosperms in an herbarium, and Orra drew and painted them.
Crisscrossing the valley over the past 2 decades, Verma has rescued dozens of fossilized dinosaur nests and hundreds of eggs, along with thousands of other specimens, including rare extinct sharks and a fossilized gymnosperm forest.
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